Stool



FIG. 1 is a perspective view of a stool showing our new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view; and

FIG. 5 is an elevational view showing one of the two identical ends thereof. 

The ornamental design for a stool, as shown and described. 